I think you should go with the first shot. In the second shot his fingers are partially obscuring his face, which is somewhat distracting. As well, in the first shot his face is more of a "poker face" (in my opinion) and the cards falling around him lend a surreal touch.

I prefer the second image. Both use pokerfaces, but the airborne cards in the first don't make a lot of sense since it doesn't appear he tossed them. I really like the action clearly shown in the second image of him tossing in the chips.

The second image. The first one just isn't as powerful in expression or action. The second one he also looks more confident and natural (unposed)
You could use it as a photo-series. As stated previously the second one, makes more sense.. it also has better lighting, imo.

I love the first one more, but I have gotten alot of feed back about the falling cards being confusing. I'll try to make it clearer when doing something like this in the future. Thanks so much for the feedback everyone